Energy Transfer Enhancement in <scp>Eu3+</scp>, <scp>Tb3+</scp>‐Doped <scp>SiO2</scp> Inverse Opal Photonic Crystals

Liu, Zhendong; Yang, Zhengwen; Sun, Lei; Li, Bo; Zhou, Ji

doi:10.1111/j.1551-2916.2011.04678.x

Cited by 13 publications

(4 citation statements)

References 17 publications

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“…The stacking of two inverse opals of different size air spheres with a uniform interface (indicated by orange line) is visible in both the cases. Note that the inverse opal films usually exhibit cracks and disorders similar to those reported earlier . However, co‐assembly method adopted here produce crack free large domain inverse opal structures ,.…”

Section: Resultssupporting

confidence: 68%

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

2018

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Alfa (a)-NaYF 4 : Yb, Er nanoparticles embedded silica inverse opal heterostructure, with dual photonic stop bands and negligible local thermal effects, was fabricated. This material exhibited improvement in its upconversion efficiency and green emission purity. The heterostructure was designed and constructed with a stack of two inverse opals with different periodicity to possess dual photonic stop bands at wavelengths l % 410 and % 660 nm with a passband in-between ( % 545 nm). Although the two photonic stop bands suppress two distant emission bands (blue: 2 H 9/2 ! 4 I 15/2 and red: 4 F 9/2 ! 4 I 15/2 transitions) simultaneously, the passband enhances the green emission bands corresponding to 2 H 11/2 ! 4 I 15/2 and 4 S 3/2 ! 4 I 15/2 transitions of Er 3 + ions. The process leads to realization of a pure green color. In addition, the local thermal effects induced by laser irradiation at the surface of the nanoparticles are largely suppressed by effective dissipation of heat as a result of the microporous nature of the inverse opal heterostructures. The reduced thermal effect in embedded nanoparticles is advantageous and shown to be responsible for the enhancement of green emission, the increase or decrease in the luminescence lifetime of Er 3 + ion 2 H 11/2 and 2 H 9/2 or 4 S 3/2 and 4 F 9/2 states, a faster luminescence rise time, and almost the same green-to-red intensity ratio with variation in laser power.[a] V. power in 280-520 IOH when compared with bare a-NaYF 4 : Yb, Er nanoparticles. This provides further evidence for effective dissipation of heat in inverse opals. [53] Needless to say, local heat is generated on the emitter surface by laser irradiation. The porous structure of inverse opals facilitates batter heat dissipation leading to reduction in local temperature around the emitter efficiently.

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Section: Resultssupporting

confidence: 68%

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

2018

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“…FRET has also been observed between pyrromethene-567 and rhodamine-610 in an ethanol-modified poly(methyl methacrylate) matrix by Li et al and between rhodamine-6G and oxazine-4 dyes in a saponite dispersion medium by Czmerova et al . The FRET mechanism between various laser dyes embedded in a PhC has been reported by various groups. − In most of these reports, the emission spectrum of the donor overlapped with the absorption band of the acceptor.…”

Section: Introductionmentioning

confidence: 92%

Influence of Photonic Crystal on Fluorescence Resonance Energy Transfer Efficiency between Laser Dyes

Kedia

Sinha

2015

J. Phys. Chem. C

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Spontaneous emission by an excited molecule strongly depends upon the available density of states into which the molecule can decay. In a photonic crystal, the allowed local density of states depletes within the stop band and enhances at the band edge of the crystal. As a result, an emitter implanted in a photonic crystal is forced to redistribute its fluorescence energy within its emission spectral range and its spontaneous emission spectrum thus gets modified. Here, we studied the influence of change in local density of states on energy transfer efficiency between a donor-acceptor pair embedded in a colloidal photonic crystal. Rhodamine-B and Rhodamine-800 dyes were chosen as energy donor and energy acceptor, respectively. We observed, an angle dependent quenching in the emission intensity of donor accompanied by enhancement in acceptor emission when both dyes were in photonic crystal. This occurred owing to depletion in the allowed local density of states available to the donor. Reduction in fluorescence lifetime of the donor in presence of acceptor confirmed fluorescence resonance energy transfer between the chromophores. In spite of marginal overlapping between emission band of donor and absorption band of acceptor, the energy transfer efficiency between the dyes was ~80% in photonic crystal environment. This enhancement resulted from forced proximity and hence, reduced intermolecular distance between donor and acceptor on being physically restricted within nano-voids of the photonic crystal.

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“…[1][2][3][4], especially rare earth doped SiO 2 . SiO 2 is a good host material for fluorescence materials because of its good transmittance and thermal stability, easy doping by rare-earth elements, low toxicity and cheapness [5][6][7][8][9]. Among the lanthanide ions, Tb 3+ doped nanomaterials have attracted great attention for their good excellent visible light emission from 400 nm to 600 nm and longer fluorescence life time.…”

Section: Introductionmentioning

confidence: 99%

Influence of Ag nanoparticles on luminescent performance of SiO2:Tb3+ nanomaterials

Zhang

et al. 2012

Journal of Non-Crystalline Solids

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Energy Transfer Enhancement in Eu³⁺, Tb³⁺‐Doped SiO₂ Inverse Opal Photonic Crystals

Cited by 13 publications

References 17 publications

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

Influence of Photonic Crystal on Fluorescence Resonance Energy Transfer Efficiency between Laser Dyes

Influence of Ag nanoparticles on luminescent performance of SiO2:Tb3+ nanomaterials

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Energy Transfer Enhancement in Eu3+, Tb3+‐Doped SiO2 Inverse Opal Photonic Crystals

Cited by 13 publications

References 17 publications

Enhanced Green Upconversion Emission From α‐NaYF4:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

Enhanced Green Upconversion Emission From α‐NaYF4:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

Influence of Photonic Crystal on Fluorescence Resonance Energy Transfer Efficiency between Laser Dyes

Influence of Ag nanoparticles on luminescent performance of SiO2:Tb3+ nanomaterials

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Energy Transfer Enhancement in Eu³⁺, Tb³⁺‐Doped SiO₂ Inverse Opal Photonic Crystals

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure

Enhanced Green Upconversion Emission From α‐NaYF₄:Yb, Er Nanoparticles Embedded Silica Inverse Opal Heterostructure